Calculate each plane separately.
How do you get square footage of a roof.
Measure the ground dimensions of the house using a tape measure and write down these dimensions.
In cases where a roof has a complex shape such as in the image to the right measuring the dimensions and areas of each part of the roof to calculate total area will result in a more accurate measurement of area.
How do you calculate square footage for a roof.
Gambrel roof square footage calculator calculate the square footage of a gambrel style roof using imperial measurements.
How to calculate square feet of a roof.
It will also give you the square footage of your roof and any other areas that you re wanting to estimate.
Calculating the area estimated if you don t want to do a lot of measuring you can use your pitch calculation to get an estimated square footage of your roof.
You can even embed this tool on a website that you own.
It will also give you the perimeter of the shape of the roof.
Once you have your roof s pitch divide the number by 12.
Multiply the length by the width to arrive at.
Multiply the length and width of each square or rectangle shaped plane.
L x w a in square feet to find square feet multiply the length measurement in feet by the width measurement in feet.
Thus a moderate 6 in 12 roof pitch means that the roof rises 6 inches vertically for every 12 horizontal inches it runs.
As a rule of thumb there are 3 bundles to a square assuming that you are using three tab strip shingles.
Measure the length and width of every roof plane or surface.
The calculator cannot account for complex shapes based on a measurement of square footage alone.
Because each 100 square feet of roof is one roofing square divide.
Include dormers the small outjuttings over attic windows.
Convert the area to roofing squares.
However shingles are packaged in a way that they are light enough for the average person to carry around.
A roof s pitch is determined by how much it rises vertically for every foot it runs horizontally.
Apply the square footage formula the next step in how to calculate square footage is to plug your measurements into the square footage formula.
A square of shingles is the number of shingles needed to cover 100 sq feet of roof area.
For example if your roof s pitch is 4 in 12 you would divide 4 by 12.
